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黎优57杂交粳稻,具有高产、稳产、优质、早熟及制种产量高的特点,在我省北部稻区试种、示范、推广已五年,面积逐年扩大,1982年已达四万余亩,产量逐年提高,作为麦茬稻栽培,一般亩产八百斤以上,深受群众欢迎。现简要介绍于后,供参考。 (一)选育经过 1.亲本来源:黎明A不育系系1973年从中国农科院引入日本包台型台中65不育系,当年夏季以黎明回交转育;黎明A不育系,自B_1F_1至B_4F_1成完全不育,1976年秋开始扩繁。
Liyou 57 hybrid japonica rice has the characteristics of high yield, stable yield, high quality, early maturity and high yield of seed production. It has been planted, demonstrated and popularized for five years in the rice planting area in the northern part of our province. The area has been expanded year by year. In 1982, it reached 40,000 mu , The output increased year by year, as the cultivation of wheat stubble, generally more than 800 kilograms per mu, welcomed by the masses. Now briefly introduced for reference. (A) Breeding after 1. Parental origin: Dawn A male sterile line was introduced from the Chinese Academy of Agricultural Sciences in 1973, the Japanese package Taichung 65 sterile lines, the summer back to dawn back to cross; dawn A sterile line, Since B_1F_1 to B_4F_1 became completely sterile, they began to expand in autumn 1976.